Finally coping with this beautiful senior sister who seemed to be his fan, Pang Xuelin returned to the room a little tired.

Looking at the pile of manuscript papers about the BSD conjecture on the desk, Pang Xuelin scratched his head.

Back then, he made a bet with his mentor Tao Zhexuan, and then plunged into the big pit of BSD, although there were also results in the middle, but Pang Xuelin knew very well that he was still far from the final proof of the BSD conjecture, and it could even be called a lifetime series.

The BSD conjecture is a very important conjecture in the field of number theory, and it is listed by the Clay Institute in the United States as one of the seven mathematical problems of the millennium, which shows its importance.

From the 80s of the last century to the present, countless talented mathematicians have tried to cross the BSD conjecture mountain, but so far, they can only climb halfway up the mountain.

In 1986, John Coates (Wyles' mentor) and Andrew Wyles proved the BSD conjecture for a class of curves with rank=0.

In 1987, Benedict Gross and Zagier proved a theorem about the rank=1 curve, which led to the proof of the BSD conjecture of rank<=1.

In 1989, Kolyvagin used the Euler tool he invented to introduce algebraic rank=1 based on the analytic rank=1 proved by Gross-Zagier.

In 1991, Karl Rubin simplified the proof of the Iwasawa master conjecture using Kolivarkin's Euler tool, and at the same time he also proved the proof of the Iwasawa master conjecture in the case of imaginary quadratic domains, thus giving part of the results of the BSD conjecture.

In 2013, Zhang Wei, a Chinese mathematician teaching in the Department of Mathematics at the University of Chicago, proved the Kolyvagin conjecture with some preconditions.

The following year, Zhang Wei collaborated with Skinner to prove the theorem of the inverse proposition of Gross-Zagier and Kolyvagin.

In 2018, Pang Xuelin gave a proof of the André-Oort conjecture of a polarized abelian cluster.

……

But so far, mathematicians have not been able to determine whether R is bounded, and in the case of Sand Group III, it is not known whether its potential is limited.

Sand groups are one of the cores of understanding the arithmetic nature of mathematical objects, and only by solving the BSD conjecture can we describe the extent to which information in the algebraic number field can be glued together by information in all local fields, which is of great significance for both logarithmic theory and algebraic geometry.

In the past two years, Pang Xuelin has devoted most of his energy to studying the BSD conjecture, and has also made good progress.

But in recent months, Pang Xuelin's research has felt like a dead end.

He vaguely realized that if he wanted to completely solve the BSD conjecture, with the current thinking of the mathematical community, he was afraid that he had come to an end.

Unless you create a completely new mathematical tool yourself, or re-prove it from a different angle.

Otherwise, don't think about any progress anytime soon.

Pang Xuelin sighed, now is not the time to consider the BSD conjecture, let's find a way to solve the inexplicable voice that appeared in my head first.

He took a shower, washed off the smell of sweat, and then lay on the bed and closed his eyes.

……

At half past eleven in the evening, Pang Xuelin was woken up by a set mobile phone alarm clock.

Pang Xuelin got up and washed his face, took out a can of milk from the refrigerator and drank a large glass.

Then, he leaned against the head of the bed, playing with his mobile phone, while waiting for the arrival of zero o'clock.

There are two messages on WeChat, the first one is the voice sent by my mother.

"Son, do you remember Yao Bingxia? It's the granddaughter of the old man Yao who lived in the same courtyard as your grandfather when she was a child, didn't their family move to the capital later? Today I went to your Uncle Yao's house with your father in the capital, and I saw that girl, she was very beautiful, she was born in dance, she was still studying in Beiwu, she didn't have a boyfriend, I want to come to Xiaoxia's mobile phone number, you remember to add it. 135********。 ”

Pang Xuelin was a little speechless, since returning to China, his mother introduced himself to a partner twice in three days, as if he was afraid that he would not find a girlfriend.

You must know that you are only 22 years old now, and you will be 23 years old if you are not old, which is still early!

However, Pang Xuelin has a little impression of the little girl who has been wiping her nose and following behind her with her snot that her mother said, just that little girl who is babbling has become a big beauty?

Pang Xuelin didn't believe it!

In addition to the message of my mother, there is also a message that was actually sent by the beautiful senior sister named Qi Xin who I just met today.

"Senior brother, the family sent me some dried fruits, I can't eat them alone, I'll give you a little bit, no one answered the knock on the door just now, I put the dried fruits at the door."

Pang Xuelin was slightly stunned, and subconsciously clicked on Qi Xin's circle of friends to take a look.

The latest circle of friends is a photo of her with herself.

Qi Xin stood in front of him, posing with a cute scissor hand, while he stood behind him, smiling a little awkwardly.

The accompanying text is: On the first day of returning to school, I met the legendary professor Pang Xuelin, hehe, more approachable than I imagined, today thanks to his help to carry my more than 100 pounds of box to the eighth floor, otherwise I would have been a tragedy.

Pang Xuelin smiled, got up and came out of the bedroom, opened the door, and found a plastic bag hanging on the doorknob, which was full of packaged raisins, hazelnuts, almonds, walnuts, pecans and other dried fruits.

Pang Xuelin took out a few and ate them, and at the same time sent a message back to Qi Xin: "Senior sister, thank you for the dried fruits, they taste very good." ”

After a while, the phone clicked.

"Junior brother, you haven't slept so late?"

"I fell asleep before and woke up to see your message......"

"Haha, I'm getting ready to sleep, you can't be a night owl, right? Wake up in the middle of the night to do research? ”

"Pretty much, it's usually more inspired at night."

"Mmmm, junior brother, then I won't bother you, I'll go to bed first, and I'll get up early tomorrow, good night~"

"Good night~"

……

Pang Xuelin smiled, after Qi Xin's interruption, his originally slightly nervous mood was relieved a lot.

Soon, the clock pointed to zero o'clock, and in Pang Xuelin's mind, the familiar electronic tone sounded on time.

"Host, is it loaded into the sci-fi world adventure system?"

"Host, is it loaded into the sci-fi world adventure system?"

"Host, is it loaded into the sci-fi world adventure system?"

……

"Confirm loading!"

Pang Xuelin said.

This is the first time in half a month that he has responded to the electronic sound in his head.

As soon as the words fell, Pang Xuelin only felt that there was a flower in front of him, everything in the room disappeared, and something similar to the game interface appeared in front of him.

Immediately after, the electronic voice in my head sounded: "The science fiction world adventure system is loaded." ”

That's it?

Pang Xuelin is a little confused, I'm not ready yet!

But soon, Pang Xuelin was attracted by the interface in front of him.

Pang Xuelin has always had moderate myopia before, with 350 degrees in his left eye and 400 degrees in his right eye.

But now, he didn't have the slightest blurred feeling, and the interface in front of him was even clearer than what he saw when he put on his glasses.

It's a feeling that hasn't been seen in a long time, as if in an instant, the whole world has lit up.

Pang Xuelin shook his head from side to side, and the interface also moved, as if he was wearing a set of VR display equipment, but he did not have the dizziness brought by VR glasses.

Obviously, this picture should not pass through the retina, but directly act on your own optic nerve.

Subsequently, Pang Xuelin focused his attention on the picture.

The picture is composed of small squares that resemble bronze doors, and each small square has a line of words underneath.

"The Three-Body Problem (Once Upon a Time on Earth Trilogy), Interstellar, Base, One Day Prisoner, 2001: A Space Odyssey, Ball Lightning, Rendezvous with Rama, Hyperion, The Martian, Gravity, Bring Her Eyes, Earth Cannon, Sevenfold Shell, 20,000 Leagues Under the Sea, ......"

The squares are arranged from top to bottom, and there are too many to count.

Pang Xuelin's eyes flashed with a look of light, every square here, there are novels, movies, comics, some he has seen, some have not, but undoubtedly, these squares represent a world.

He hurriedly asked the system: "System, your name is called the Science Fiction World Adventure System, does it mean that I want to enter these science fiction worlds for adventures?" ”

"Congratulations to the host for guessing correctly, this system can help the host enter the major science fiction planes, as long as you complete the tasks released by the system, you can get the corresponding rewards, these rewards include but are not limited to various scientific and technological products, technical materials and knowledge beyond the times, such as the BSD conjecture that the host is researching, if the host can complete the task released by the system, maybe you can get all the proof process of the BSD conjecture."

Pang Xuelin frowned slightly, this system even knows what it is studying, I am afraid that in front of it, he has no secrets to speak of.

Pang Xuelin asked again: "System, then do you have a way for me to cross over to some martial arts immortal planes?" Or a plane like the Marvel Universe? ”

The martial arts immortal plane, not to mention those beautiful heroines and young ladies, the cultivation techniques that can make individuals strong and even immortal are enough to make people salivate.

The Marvel Universe is the same, all kinds of black technologies are rampant, even more mysterious than the fantasy world!

"Host, please note that this system is not a low forcing system, the martial arts Xianxia plane you said, there are too many logical loopholes, the law of cause and effect is not perfect, it cannot be generated, and the Marvel Universe is the same, the power is unbalanced, the logic is chaotic, once you try to generate, it is easy to cause the system to collapse. This system only serves the universe of the universe where the gravitational constant is equal to 1.67 times 10 to the minus 11th degree, the vacuum speed of light is 29.98 million kilometers per second, the Planck constant is 6.626, and the electron charge is 1.602 times 10 to the minus 19th coulomb, that is, the universe where the host exists. In other words, the various technologies that emerge in the system world are also possible in the real world. ”

In addition, the host does not need to make a sound, and can communicate with the system directly through brain waves. The system opens the plane once a month, after each opening, the system will release the corresponding task, and you can get the corresponding reward for completing the task, the ratio of plane time to real time is 10000:1, if the host dies in the plane world, the system will automatically strip from the host, which may cause unpredictable consequences. ”

Pang Xuelin's heart sank: "What consequences?" ”

"Including but not limited to brain death, cerebral infarction, brain can, etc., of course, there is a certain chance of intact." Please note that this month's plane will be opened in ten seconds, the opening plane is random, the task is random, the host please be ready, ten, nine, eight, seven, six, five, four, three, two, one......"

MMP!

Pang Xuelin only felt that it was dark in front of him, and he fainted suddenly.